148 citations · 889 across the 26 of their papers we have counts for
26 papers
Towards detection of molecular parity violation by microwave spectroscopy of CpRe(CH)(CO)(NO)
Nityananda Sahu, Konstantin Gaul, Anke Wilm +2
Parity-violating differences in rotational constants of a chiral 5d transition metal complex, that was previously experimentally well-characterised by broad-band microwave spectros…
Electric dipole moments and the search for new physics
Ricardo Alarcon, Jim Alexander, Vassilis Anastassopoulos +140
Static electric dipole moments of nondegenerate systems probe mass scales for physics beyond the Standard Model well beyond those reached directly at high energy colliders. Discrim…
Relativistic and QED corrections to one-bond indirect nulcear spin-spin couplings in X and X ions (X = Zn, Cd, Hg)
Mariano Colombo Jofré, Karol Kozioł, I. Agustín Aucar +3
The indirect nuclear spin-spin coupling tensor, , between mercury nuclei in Hg-containing systems can be of the order of few kHz and one of the largest measured. We cond…
Cool molecular highly charged ions for precision tests of fundamental physics
Carsten Zülch, Konstantin Gaul, Steffen M. Giesen +2
Molecules and atomic highly charged ions provide powerful low-energy probes of the fundamental laws of physics: Polar molecules possess internal fields suitable to enhance fundamen…
Accurate \textit{ab initio} calculations of RaF electronic structure indicate the need for more laser-spectroscopical measurements
Andrei Zaitsevskii, Leonid V. Skripnikov, Nikolai S. Mosyagin +4
Recently a breakthrough has been achieved in laser-spectroscopic studies of short-lived radioactive compounds with the first measurements of the radium monofluoride molecule (RaF)…
Fourfold Differential Photoelectron Circular Dichroism
K. Fehre, N. M. Novikovskiy, S. Grundmann +28
We report on a joint experimental and theoretical study of photoelectron circular dichroism (PECD) in methyloxirane. By detecting O 1s-photoelectrons in coincidence with fragment i…
Isotope Shifts of Radium Monofluoride Molecules
S. M. Udrescu, A. J. Brinson, R. F. Garcia Ruiz +25
Isotope shifts of RaF were measured for different vibrational levels in the electronic transition . The observed isoto…
Enantiomer superpositions from matter-wave interference of chiral molecules
Benjamin A. Stickler, Mira Diekmann, Robert Berger +1
Molecular matter-wave interferometry enables novel strategies for manipulating the internal mechanical motion of complex molecules. Here, we show how chiral molecules can be prepar…
Quasi-relativistic approach to analytical gradients of parity violating potentials
Sascha A Brück, Nityananda Sahu, Konstantin Gaul +1
An analytic gradient approach for the computation of derivatives of parity-violating (PV) potentials with respect to displacements of the nuclei in chiral molecules is described an…
A new route for enantio-sensitive structure determination by photoelectron scattering on molecules in the gas phase
K. Fehre, N. M. Novikovskiy, S. Grundmann +28
X-ray as well as electron diffraction are powerful tools for structure determination of molecules. Studies on randomly oriented molecules in the gas-phase address cases in which mo…
Parity nonconserving interactions of electrons in chiral molecules with cosmic fields
Konstantin Gaul, Mikhail G. Kozlov, Timur A. Isaev +1
Pseudoscalar or pseudovector cosmic fields, that serve as a source of parity () violation, are invoked in different models for cold dark matter or in the standard mode…
Chiral molecules as sensitive probes for direct detection of -odd cosmic fields
Konstantin Gaul, Mikhail G. Kozlov, Timur A. Isaev +1
Particular advantages of chiral molecules for direct detection of the time-dependence of pseudoscalar and the timelike-component of pseudovector cosmic fields are highlighted. Such…
High-resolution resonance-enhanced multiphoton photoelectron circular dichroism
Alexander Kastner, Greta Koumarianou, Pavle Glodic +13
Photoelectron circular dichroism (PECD) is a highly sensitive enantiospecific spectroscopy for studying chiral molecules in the gas phase using either single-photon ionization or m…
Toolbox approach for quasi-relativistic calculation of molecular properties for precision tests of fundamental physics
Konstantin Gaul, Robert Berger
A generally applicable approach for the calculation of relativistic one-electron properties with two-component wave functions is presented. The formalism is explicitly evaluated fo…
Ab initio study of parity and time-reversal violation in laser-coolable triatomic molecules
Konstantin Gaul, Robert Berger
Electronic structure enhancement factors of simultaneous parity and time-reversal violation (-violation) caused by an electric dipole moment of the electron (eEDM) a…
Systematic study of relativistic and chemical enhancements of -odd effects in polar diatomic radicals
Konstantin Gaul, Sebastian Marquardt, Timur Isaev +1
Polar diatomic molecules that have, or are expected to have a -ground state are studied systematically with respect to simultaneous violation of parity and…
BOOST -- A Satellite Mission to Test Lorentz Invariance Using High-Performance Optical Frequency References
Norman Gürlebeck, Lisa Wörner, Thilo Schuldt +15
BOOST (BOOst Symmetry Test) is a proposed satellite mission to search for violations of Lorentz invariance by comparing two optical frequency references. One is based on a long-ter…
Zeroth order regular approximation approach to electric dipole moment interactions of the electron
Konstantin Gaul, Robert Berger
A quasi-relativistic two-component approach for an efficient calculation of -odd interactions caused by a permanent electric dipole moment of the electron (eEDM) is…
Perturbation of Exciton Aggregate Coupling by Optical Excitation in Crystalline Perfluoropentacene Films
K. Kolata, S. Marquardt, N. W. Rosemann +7
Carrier multiplication by singlet exciton fission enhances photovoltaic conversion efficiencies in organic solids. This decay of one singlet exciton into two triplet states promise…
Stereochemical configuration and selective excitation of the chiral molecule halothane
Martin Pitzer, Gregor Kastirke, Phillip Burzynski +12
X-ray single-photon ionization and fragmentation of the chiral molecule halothane (CHBrClCF) from a racemic mixture have been investigated using the COLTRIMS (Cold Target R…
Observation of enhanced chiral asymmetries in the inner-shell photoionization of uniaxially oriented methyloxirane enantiomers
Maurice Tia, Martin Pitzer, Gregor Kastirke +38
Most large molecules are chiral in their structure: they exist as two enantiomers, which are mirror images of each other. Whereas the rovibronic sublevels of two enantiomers are al…
Theoretical description of circular dichroism in photoelectron angular distributions of randomly oriented chiral molecules after multi-photon photoionization
R. E. Goetz, T. A. Isaev, B. Nikoobakht +2
Photoelectron circular dichroism refers to the forward/backward asymmetry in the photoelectron angular distribution with respect to the propagation axis of circularly polarized lig…
Polyatomic candidates for cooling of molecules with lasers from simple theoretical concepts
Timur Isaev, Robert Berger
A rational approach to identify polyatomic molecules that appear to be promising candidates for direct Doppler cooling with lasers is outlined. First-principle calculations for equ…
Ab initio study of radium monofluoride, RaF, as a candidate to search for P- and T,P- violation effects
A. D. Kudashov, A. N. Petrov, L. V. Skripnikov +4
Relativistic ab initio calculations have been performed to assess the suitability of RaF for experimental search of P- and T,P-violating interactions. The parameters of P- and T,P-…